1.Light weight,
2.High temperature resistance,
3.Low reheating linear change,
4.Good thermal shock resistance,
5.Lower construction cost,
6.Saving energy.
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Item | Alumina Bubble Brick | |||
Types | Unit | 85# | 90# | 99# |
The Highest Service Temperature | ℃ | 1680 | 1700 | 1800 |
Al2O3 | % | ≥85 | ≥90 | ≥99 |
SiO2 | % | ≤15 | ≤8 | ≤0.2 |
Fe2O3 | % | ≤0.2 | ≤0.2 | ≤0.2 |
Bulk Density | g/cm3 | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 |
Cold Crushing Strength | MPa | ≥12 | ≥10 | ≥9 |
Refractoriness Initial Under Load (0.1MPa, 0.6%) | ℃ | ≥1650 | ≥1760 | ≥1760 |
Reheating Linear Change Rate (1600℃*3h) | % | ±0.3 | ±0.3 | ±0.3 |
Heat Expansion Coefficient (Room temperature -1300℃) | ~7.8 | ~8.0 | ~8.6 | |
Thermal Conductivity (Average temperature 800℃ ) | w/(m*k) | ≤0.8 | ≤1.3 | ≤1.5 |
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